I agree with this sentiment, but at the same time the only reason these companies exist is because people pay them to do what they do; therefore, individual responsibility is simply to not buy dumb shit you don't need. Thrift stores are a great place for environmentalism, as one item purchased there is one item that isn't made new. More people doing so will turn the economy more and more into a circular economy where goods simply change hands locally rather than created on the other side of the planet and moved to the other side of the planet.
Behind every company (or group of companies) destroying the environment, there's a clueless consumer paying them to do it.
Yes, almost all store bought items that are "bio-degradable" will not degrade in nature and require industrial compost facilities. You'll often see warnings like:
Biodegradable^*^
^*where^ ^facilities^ ^exist^